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Finding the Fourth Proportional to 15,223.68, 21,008.40 and 8,599.68

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Solution

The fourth proportional to 15,223.68, 21,008.40 and 8,599.68 is: 11,867.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,223.68 : 21,008.40 = 8,599.68 : x
  2. Step 2: Convert to fraction form
    15,223.68/21,008.40 = 8,599.68/x
  3. Step 3: Cross multiply
    15,223.68x = 21,008.40 × 8,599.68
  4. Step 4: Simplify right side
    15,223.68x = 180,665,517.31
  5. Step 5: Solve for x
    x = 180,665,517.31/15,223.68
  6. Step 6: Final answer
    x = 11,867.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.